Computes the initial equilibrium numbers-at-age, unfished recruitment (R0), and Beverton-Holt stock-recruitment parameters.
Usage
get_initial_numbers(B0, h, M_a, spawning_potential_a)
Arguments
- B0
Unfished spawning biomass.
- h
Beverton-Holt steepness parameter.
- M_a
a vector of natural mortality at age.
- spawning_potential_a
a vector of spawning potential at age
(maturity × fecundity).
Value
A list containing:
- Ninit
Initial numbers-at-age (vector).
- R0
Unfished recruitment (scalar).
- alpha
BH alpha parameter.
- beta
BH beta parameter.
